[Qemu-devel] [PULL v3 13/44] target/mips: Support R5900 three-operand MADD1 and MADDU1 instructions

[Aleksandar Markovic]

From: Fredrik Noring <address@hidden>

The three-operand MADD and MADDU are specific to R5900 cores.

Reviewed-by: Aleksandar Markovic <address@hidden>
Signed-off-by: Aleksandar Markovic <address@hidden>
Signed-off-by: Fredrik Noring <address@hidden>
---
 target/mips/translate.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/target/mips/translate.c b/target/mips/translate.c
index 0a49926..2636e8c 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -5045,7 +5045,7 @@ static void gen_muldiv(DisasContext *ctx, uint32_t opc,
  *
  * and
  *
- *     MADD[U]    rd, rs, rt
+ *     MADD[U][1] rd, rs, rt
  *
  * such that
  *
@@ -5107,6 +5107,9 @@ static void gen_mul_txx9(DisasContext *ctx, uint32_t opc,
             tcg_temp_free_i32(t3);
         }
         break;
+    case MMI_OPC_MADD1:
+        acc = 1;
+        /* Fall through */
     case MMI_OPC_MADD:
         {
             TCGv_i64 t2 = tcg_temp_new_i64();
@@ -5126,6 +5129,9 @@ static void gen_mul_txx9(DisasContext *ctx, uint32_t opc,
             tcg_temp_free_i64(t2);
         }
         break;
+    case MMI_OPC_MADDU1:
+        acc = 1;
+        /* Fall through */
     case MMI_OPC_MADDU:
         {
             TCGv_i64 t2 = tcg_temp_new_i64();
@@ -27370,6 +27376,8 @@ static void decode_mmi(CPUMIPSState *env, DisasContext 
*ctx)
     case MMI_OPC_MULTU1:
     case MMI_OPC_MADD:
     case MMI_OPC_MADDU:
+    case MMI_OPC_MADD1:
+    case MMI_OPC_MADDU1:
         gen_mul_txx9(ctx, opc, rd, rs, rt);
         break;
     case MMI_OPC_DIV1:
@@ -27385,8 +27393,6 @@ static void decode_mmi(CPUMIPSState *env, DisasContext 
*ctx)
         gen_HILO1_tx79(ctx, opc, rd);
         break;
     case MMI_OPC_PLZCW:         /* TODO: MMI_OPC_PLZCW */
-    case MMI_OPC_MADD1:         /* TODO: MMI_OPC_MADD1 */
-    case MMI_OPC_MADDU1:        /* TODO: MMI_OPC_MADDU1 */
     case MMI_OPC_PMFHL:         /* TODO: MMI_OPC_PMFHL */
     case MMI_OPC_PMTHL:         /* TODO: MMI_OPC_PMTHL */
     case MMI_OPC_PSLLH:         /* TODO: MMI_OPC_PSLLH */
-- 
2.7.4